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INFLUENCE OF CERTAIN ELEMENTS ON STEEL.
381
TABLE XVII-U. Classification of Basic Heats According to Content of Manganese.
NOTE.—In the last column a value of 770 pounds is given to 0.01 per cent, of carbon, and 1000 pounds to 0.01 per cent, of phosphorus.
			Chemical composition :			Ultimate strength ;	
			per cent.			pounds per sq. inch.	
		tn ->j					6*.
Limits of	Limits of	eg m		to	„?	03 •d	•3 p •
carbon ;	manganese ;			2	QJ 03		"« * 3
per cent.	per cent.	*S	|	ft	i	g	d a g
		03 ft	0	j§	to	1	"281
		|		PH	1		fis-l
		fe				4	^
	0.05 to 0.09	12	0.0297	0.0075	0.081	45803	42766
	0.10 to 0.14	56	0.0327	0.0073	0.120	45674	42426
Below 0.075	0.15 to 0.29 0.30 to 0.39	13 16	0.0388 0.0608	0.0072 0.0097	0.191 0.354	45961 48034	42254 42390
	0.40 to 0.49	34	0.0633	0.0091	0.438	47981	42205
	0.50 to 0.59	4	0.0663	0.0133	0.508	51133	44698
	0.20 to 0.29	7	0.1103	0.0079	0.259	50056	40773
	0.30 to 0.39	114	0.1458	0.0098	0.363	54110	41904
0.075 to 0.224	0.40 to 0.49	242	0.1668	0.0099	0.441	57036	43203
	0.50 to 0.59	110	0.1744	0.0125	0.531	59316	44638
	0.60 to 0.69	26	0.1887	0.0154	0.622	61863	45793
	0.30 to 0.39	61	0.2678	0.0089	0.365	63858	42349
0.225 to 0.374	0.40 to 0.49 0.50 to 0.59	221 102	0,2689 0.2668	0.0101 0.0130	0.446 0.532	65949 67565	44236 45723
	0.60 to 0.69	28	0.2695	0.0139	0.624	69467	47327
TABLE XYII-V. Effect of Manganese upon Basic Steel.
Manganese; pounds per sq.. inch.
Carbon.							
per cent.	Per cent. 0.30	Per cent. 0.35	Per cent. 0.40	Per cent. 0.45	Per cent. 0.50	Per cent. 0.55	Per cent. 0.60
0 05		550	1100	1650	2200	2750	3300
0.10		650	1300	1950	2600	3250	3900
0.15		750	1500	2250	3000	3750	4500
0.20		850	1700	2550	3400	4250	5100
0.25		950	1900	2850	3800	4750	5700
0.30		1050	2100	3150	4200	5250	6300
0.35		1150	2300	3450	4600	5750	6900
0.40		1250	2500	3750	5000	6250	7500
							
carbon is 90 Ib.; the effect per 0.01 per cent, of manganese at 0.1 per cent, of carbon is 130 Ib., and the increase in effect due to a